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Mademuasel [1]
3 years ago
14

A scientist designed a foam container to help keep frozen foods from melting. Which best explains how the foam works? It removes

thermal energy from the air inside the container. It removes thermal energy from the frozen foods inside the container. It reduces the amount of thermal energy that is transferred from inside to outside the container. It reduces the amount of thermal energy that is transferred from outside to inside the container.
Physics
1 answer:
Allushta [10]3 years ago
6 0

Answer:

the foam an insulator............

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marshall27 [118]

Answer:

Option-C (Lipoprotein profile)

4 0
2 years ago
A 450g mass on a spring is oscillating at 1.2Hz. The totalenergy of the oscillation is 0.51J. What is the amplitude.
Volgvan

Answer:

A=0.199

Explanation:

We are given that  

Mass of spring=m=450 g==\frac{450}{1000}=0.45 kg

Where 1 kg=1000 g

Frequency of oscillation=\nu=1.2Hz

Total energy of the oscillation=0.51 J

We have to find the amplitude of oscillations.

Energy of oscillator=E=\frac{1}{2}m\omega^2A^2

Where \omega=2\pi\nu=Angular frequency

A=Amplitude

\pi=\frac{22}{7}

Using the formula

0.51=\frac{1}{2}\times 0.45(2\times \frac{22}{7}\times 1.2)^2A^2

A^2=\frac{2\times 0.51}{0.45\times (2\times \frac{22}{7}\times 1.2)^2}=0.0398

A=\sqrt{0.0398}=0.199

Hence, the amplitude of oscillation=A=0.199

4 0
3 years ago
Which of the following is the least reliable source of background information for a scientific project?
garri49 [273]

Answer:

general internet site

Explanation:

7 0
3 years ago
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A plumbing branch is composed of 68' of 1" diameter Type L copper pipe, three 90-degree elbows (wrought), and a gate valve. The
valina [46]

Answer:

7.404 psi

Explanation:

See attachment please

5 0
4 years ago
What kinds of natural phenomena does the inverse-square law apply to?
uysha [10]

Answer:

It applies to diverse phenomena

Explanation:

not sure if u need one, just ask if you do :D

4 0
3 years ago
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